The Behavior of Vortex Streets at Density Interfaces in Stratified Shear Flows

Abstract

The behavior of vortex streets at density interfaces in stratified shear flows is investigated using a linear theory. Secondary vorticity is generated at the surface of the vortex by the difference between directions of the density gradient and the gravitational acceleration. Newly generated circulation is estimated by integrating secondary vorticity over the surface of the vortex.